Extruding die



Oct. 8, 1940- M. PARRISH, JR.. ET AL 2,217,135

EXTRUDING DIE Filed 21 20,1940

a. Q A I I Patented Oct. 8, 1 940 UNITED" "STATES 2,217,135 MEXTRUDING DIE fmxnem Parrish, in, Cambridge, Mass, and Thomas R. James, Minneapolis, Mimn, assignors to General Mills, 1110., a corporation of Dela-i ware Application May 20', 1940, Serial No. 336,184

This inventionrelates to dies for the extrusion of macaroni or other tubular edible products of a similar nature and more particularly to apparatus of thistype wherein the extruded dough-like material is severed at intervals to form rings.

An object of the invention-is to provide an.

improved and eflicient form of extruding die,

and one of the parts of which can be readily and 1 efficiently manufactured u and easily assembled or disassembled. A

These and other objects which will hereinafter appear are accomplished by this invention which is fully described in the following specification and shown in the accompanying drawing in which:

Figureyl is a partial section through an ex-. truding die and associated parts embodying the invention; 1 Fig. 2'is a section on the line 2 of l igure 1;

Figs. 3 and 4 are end elevations of the extruding die as viewed on the lines 3 andrespectively of Figure 1; s

Fig. 5 is a perspective view of the insert re- :5 moved;

Fig. 6 is a view similar to Figure '1 showing the die. block or ring with the die removed;'and

Fig.5 is a perspective view of a macaroni ring as made by this apparatus. V i

go The embodiment-illustrated comprisesa die block or ring it which is preferably stationary and has a hole I l therein, as shown in Fig. 6,

the inner end of which has an enlarged offset cylindrical portion i2 providing a shoulder l3 to a receive the insert represented generally by the numeral It.

' I 'his insert has a cylindrical portion lihaving a driving fit with the enlarged cylindrical 'ofiset portion i2. The rim it of the cylindrical portion 15 of the insert thus bears against the shoulder l3 and this, together with the cylindrical portions of the insert and hole, serve to accurately position the insert in the die block or ring.

The inserirhas an axial extension in the form 3 of a reduced pin .11 which extends through the opening II and is.'preferably of such a lengththat it is flush with the outer surface of the die block or ring I0. Within'the rim I6 is located an annular depres D sion or. counterbore l8 whichcommunicates directly with the annular space I! between the pin 41 and the hole ll through which the macaroni hextruded.

A series of holes 20, preferably four in num-" I her, are. disposed about the longitudinal axisof axes radial with respect to the die block, each 2 Claims. (01. 107-14) the insert and extend from the inner face of the insert into the annular depression II. t

In the embodiment shown, the die block I0 is preferably stationary and cylindrical in form, the holes ll being many in number and having their 5 having its insert.

In this form, a roller 2| ismounted to move.

slowly about an axis slightly eccentric to 'the axis of the die ring III, while additional'pres- ,10 sure is exerted upon dough 22 to feed it into the space between the roller 2| and the die ring so that the roller is slowly moved toward each die insert. Some of this dough will be squeezed through the holes 20 into the annular depression 18 where the streams of dough from these four holes meet and pass out through the T annular space NI. n

Thus a tube of macaroni is extruded which has a shape corresponding to that of the annug0 lar space'*l9. In this instance, it is desired that .this tube shall be cut'at intervals to form a thin ring 23, as shown in Fig.1. To accomplish this, I have provided a knife 2!, carried upon a suitable support, not shown, which is adapted to 25 I same rotative speed as that cf the roller 2! so I that on each actuation of the roller some of the material is'extruded through the die and this is followed by the knife 24 which severs it to form a macaroni ring 23.

- This form of dle adapts itself also to the manufacture of macaroni as such. In that case, the

knife 24 is omitted'and the die ring I0 becomes in aconvenient form of die block and the dough to be extruded may be fed to the dies in any well known manner. 40

- Thus it will-be seen that we have provided a very' simple and eflicient form of-macaronl die and one which lends itself-to mass production,

The assembling operation consists merely in driving the insertin place and it is removed by the simple operation of driving out by means of the pin ll.

While wehave shown the described but a single embodiment of our invention, it is to be understood that it is capable.,of many modiiications. Changes, therefore, may be made which do not depart from the spirit and :scope of our invention as disclosed in the appended claims. -We claimasourinvention': t

1. In a die of'the type described, a die block a cylindrical portion adapted to iit within the cylindrical portion of the die block and having a I: reduced pin extending axially through the hole but spaced therefrom to form an annular opening through which material may be extruded, an annular depression about the pin in the lace-o! the cylindrical portion of the insert, and a plu- 10 rality oi. holes through the cylindrical portion of the insert and extending into the annular depression.

2. In a die of the type described, a die block having a hole therethrough which has an enlarged oirset cylindrical portion, an insert having a cylindrical portion adapted to ilt within the cylindrical portion of the die block and havin a reduced pin extending axially through the hole but spaced therefrom to i'orm an annular opening through which material may beextruded, said opening having a length greater than the diameter of said pin, an annular depression about the pin in the lace o! the cylindrical portion of the insert, and a plurality of holes through the.

cylindrical portion of the insert and extending into the annular depression.

MAXFIEID PARRISH, JR.

THOMAS R. JAMES. 

